Photograph showing a model of the 27 in-refracting telelescope being built for the Imperial Observatory, Vienna by Howard Grubb of Dublin, Ireland. The model was displayed by Howard Grubb and Sons in the 1876 exhibition of scientific instrument at the South Kensington Museums. Photograph showing a model of the 27 in-refracting telelescope being built for the Imperial Observatory 1876
Model of the fixed aerial of the 178 Mc/s. radio telescope at the Mullard radio-astronomy observatory at Cambridge University. (Fixed to a board 41"x18") Model of the fixed aerial of the 178 Mc/s. radio telescope 1963
Model showing the lay-out of the Cambridge University 5000 feet radio telescope Model, Cambridge University radio telescope 1964
Model of steerable aerial at the Radio and Space research Station at Chilbolton, ex " Engineer's day" exhibition, made by Associated Electrical Industries Limited, 1966-1967 Model of the Chilbolon aerial 1967